| 摘要 |
PURPOSE: A clock pulse generation circuit is provided to maintain the stability by generating an internal clock pulse having a constant high pulse width according to a particular frequency. CONSTITUTION: A clock pulse generation circuit include a first pulse generator, a second pulse generator, and a first logic unit. The first pulse generator(10) is used for generating an internal clock pulse having a constant high pulse width when a frequency of an external clock signal is more than a particular frequency. The second pulse generator(20) is used for generating the internal clock pulse when the frequency of the external clock signal is less than the particular frequency. The first logic unit selects one of outputs of the first pulse generator and the second pulse generator and outputs the internal clock pulse.
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